Whistle



July 17, 1923. 1,462,161

' I H. G. BALTHASAR WHISTLE Filed March 1920 Patented July 17, 1923,

* entree 1 time ntr es.

. "nennv e. narrnasan, or s1. LOUIS, iarssooar, Ass-xenon TO B. AND B.manurac- TUBING COMPANY, or STLJLOUIS, Mrssounr', a conronnrron orivrrssounr.

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Applieationgfiled March 8, 1920. Serial No. 363,920.

To all whom it may concern Be it known that I, HARRY BALTHAsAR a citizenof the United States, residing at the city of St. Louis, in the State ofMis souri, have invented certain new and useful Improvements in i ihistles, of which the following is a specification. I 1

This invention is awhistle for motorvehicles, and belongs to what isknown as the compression-type of whistle, being operated from thecompression in one of the. cylinders in the engine, instead of from theexhaust.

Its especial advantages cheapness in manufacture, facility in cleaning,ease in 013 eration, and reliability.

In the accompanying drawings forming part of this specification, inwhich like numbers of reference denote like parts wherever. they occur,i

Figure 1 is a side elevation showing the whistle attached tov acylinder-head, in the place of an ordinary priming-cup, such priming-cupbeing removed for that purp Figure 2 is a front elevation;

Figure 3 is a sectional view on the'line 3-3 in Figure 2;

Figure 4 is a detail of a plate for adjusting the volume or" sound fromthe whistle; and

Figure 5 showsa modification, in which a pair of slidable members isused.

By the threaded nipple 1, this device, as a whole, is attached to thecylinder-head 2. For the sake of convenience, this may be by removingone of the priming cups, but, if desired, may be through a separatehole.

The operating cord 8 leads to the drivers seat, and may, if desired, beattached to the steering-post (not shown); or atany other suitablepoint. At its other end, the said cord is fastened in the hole 1 inthebelle crank 5, pivoted at 6 to lugs 7 projecting from thevalve-casing 8.

The gas passes out of the cylinder through passage 9 into chamber 10, hewall of which 7 on one side is provided with valve-seat 11 opposite hole12 normally closed by the hexagonal nut 13.

Valve 14 seatsupon valve-seat 11 and controls the exit of gas fromchamber 10.

Valve 14; is kept normally closed by'spring 15 or any other suitablespring, and is opened by the pressure of nose 160tbell-crank' 5 reversedor other means of union of the two when the said bell-crank 5 is rockedon pi t 6 by apull upon the cord 3.

Then valvelt has thus been opened, the rushes through opening 17 intochamber 8 nd thenceithrough the restricted port 19 n a d past thethroat2001" the whistle. Throat i v s formed ina hollow casting 21, which, I

for. the sake of easier'casting, is formed with the opening 22. Opening22 is closed by a cap23 by upsetting the edge 2 of the said cap. .65

.Nut 13 is easily removable for the purpose otcleaning chamber 10 orpassage 9.0r for the purpose of taking'out valve 1 1 for regrinding or.for the purpose of cleaning valve-seat 11. s V Member 21 is formed witha flange 25, preferably internally screw-threaded. Valve-casing 8 isprovided with a collar 26, preferably externally screw-threaded, whichvscrew-threads on collar 26 and within flange 25 serveto unitevalve-casing 8 and hollow member 21 .together.- Theorder of thescrew-threading of the said parts may be parts provided. M

The plate'27 contains the slot 28, and is attached by the'screw 29 tothe member 21. It may be attached to the casting21 either onthe outside,as shown in the drawings,or upon the inside thereof, as not shown in thedrawings, or, as further not shown in the drawings, it may be fastenedin a groove in the wall of casting 21. Another form not shown in thedrawings, but which maybe substituted'tor the slot and screw, is agroove and screw. For the slidable member 27, a pivoted member (notshown in the drawings) may, likewise, be substituted, whlchmember willswing like a trap-door.

The slot 28 allows the plate 27 to be adjusted in either direction, soas either to reduce the opening ofthe throat 20 or to make it larger,with the object of regulating the volume of tone emitted by the whistle:

either to suit the taste of individual users or to accommodate the sameto the amount of compression in the individual engine or cylindertowhich this whistle is a tached. s i The modified form shown in Figure 5con sists 01" a pair of wings 30 and 31, slidably 105 pivoted by thescrew 32 to the casting 21. This allows even more accurate adjustment ofthe size of the opening throughthroat 20.

If desired, both wings and 31 can be closed, as shown in Figure 5, orone of them may be partly or entirely open and the other one partly orentirely closed; The combination of these wings admits of innumerablepermutations of arrangements for small or large apertures, and permitsnice adjustment to suit any taste or requirement. It, also. prevents thepossibility lot hissing through slot 28. The device shown in Figure 5can be located either inside or outside ot the casting" 21 orin a groovein the same.

Having; thus described this invent o:v hereby reserve the benefit of allchan tts in form. arrangement. order. or use of parts, as it may he madetherein without depart ng from the spirit of this invention or the scopeof the following claimsv I claim:

1. A whistle of the compression type having a whistle throat andco-operat-ing plates the combination with is evident that many minorchanges 3. A whistle of the compression type having awhistle throat anda pair of superimposed cooperating plates having an opening-anchelosingmovement with respect to the throat opening for varying the extent ofthe same.

43:. In a whistle of the compression type.

a casting tachment to an engine cylinder and provided. with a whistlethroat. of a pair of pivotally mounted cooperatively arranged plateshaving adjustment over the throat Opening and being- (a pahle of arelatively open-andshut movement 'iermitting innumerable permutation ofarrangement for small or large openings.

In testimony whereof I hGIGHUlZORfiiX- my signature.

' HARRY G. BALTHASAR.

